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Message-ID: <alpine.DEB.2.20.1601260858590.27338@east.gentwo.org>
Date: Tue, 26 Jan 2016 09:00:20 -0600 (CST)
From: Christoph Lameter <cl@...ux.com>
To: Laura Abbott <labbott@...oraproject.org>
cc: Pekka Enberg <penberg@...nel.org>, David Rientjes <rientjes@...gle.com>,
Joonsoo Kim <js1304@...il.com>, Andrew Morton <akpm@...ux-foundation.org>,
linux-mm@...ck.org, linux-kernel@...r.kernel.org,
kernel-hardening@...ts.openwall.com, Kees Cook <keescook@...omium.org>
Subject: Re: [PATCH 3/3] slub: Add option to skip consistency checks
On Mon, 25 Jan 2016, Laura Abbott wrote:
> SLUB debugging by default does checks to ensure consistency.
> These checks, while useful, are expensive for allocation speed.
> Features such as poisoning and tracing can stand alone without
> any checks. Add a slab flag to skip these checks.
I would suggest to rename the SLAB_DEBUG_FREE to SLAB_CONSISTENCY_CHECKS
instead. I think the flag is already used that way in a couple of places.
Flags generally enable stuff. Disabling what is enabled by others is
something that we want to avoid for simplicities sake.
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